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川西北草地鼠类危害面积高达2050.5万亩,若能有效防治,按当地牧区现有载畜量(7亩/羊单位)计算,可增养羊293万只。 以鼠兔Ochotona sp.和中华鼢鼠(Myospalax fontan(?)erii)为主的鼠种危害川西北草原,不仅阻碍了草地牧业的发展,而且还传播鼠疫等疾病,威胁人畜健康。过去草地药物灭鼠,对控制鼠害也收到较好效果,但须禁牧20—70天,加重了草场载畜量,且易造成人畜二次中毒、污染环境、杀伤天敌。1982年日本山形县林业试验场研究员大津正
Northwest Sichuan grassland rats harm area up to 2050.5 hectares, if effective prevention and treatment, according to the current carrying capacity of pastoral areas (7 acres / sheep units), can raise 2930000 sheep. The rat species Ochotona sp. And Myospalax fontan (?) Erii are endangering the northwestern Sichuan grassland, not only hinder the development of grassland husbandry, but also spread plague and other diseases, threatening the health of humans and animals. Past lawn anti-rat drugs, rodent control also received good results, but to prohibit grazing 20-70 days, increasing the carrying capacity of grassland, and easily lead to poisoning secondary livestock and poultry, polluting the environment, killing natural enemies. 1982 Japan Yamagata Forestry Research Institute researcher Otsuka Masayoshi